Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: qual empresa lançou audiolivros escritos por day, martin martin day
 ###Tabelas: CREATE TABLE georgia_counties_ranked_by_per_capita_income (georgia_counties_ranked_by_per_capita_income_id AUTO_INCREMENT PRIMARY KEY, County VARCHAR, Per capita income VARCHAR, Median household income VARCHAR, Median family income VARCHAR, Population INT, Number of households INT) CREATE TABLE 1972_isle_of_man_sidecar_500cc_tt_final_standings (1972_isle_of_man_sidecar_500cc_tt_final_standings_id AUTO_INCREMENT PRIMARY KEY, Place INT, Rider VARCHAR, Country VARCHAR, Machine VARCHAR, Speed VARCHAR, Time VARCHAR, Points INT) CREATE TABLE the_sarah_jane_adventures (the_sarah_jane_adventures_id AUTO_INCREMENT PRIMARY KEY, Title VARCHAR, Author VARCHAR, Reader VARCHAR, Format VARCHAR, Company VARCHAR, Release Date VARCHAR, Notes VARCHAR) CREATE TABLE driver_standings (driver_standings_id AUTO_INCREMENT PRIMARY KEY, Position INT, Driver VARCHAR, Points INT, Starts INT, Wins INT, Top 5s INT, Top 10s INT, Winnings ($) INT) CREATE TABLE academy_graduates_2000–present (academy_graduates_2000–present_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Current Club VARCHAR, Born VARCHAR, Debut VARCHAR, Manager VARCHAR)  
SELECT Company FROM the_sarah_jane_adventures WHERE Author = Day, Martin Martin Day